Chinstrap penguins are named for the distinctive narrow band of black feathers that extends from ear to ear. Chinstraps may be the most numerous of penguins, with a population estimated at 12 to 13 million. Yet they occur only on the Antarctic Peninsula and the sub-antarctic islands south of the Antarctic Convergence. For nesting, they often select lofty sites that are the first to become snow-free, to ensure the maximum amount of time to raise their chicks. Chinstraps are regarded as the boldest of the species; they average 28 to 29 inches in height and weigh some 8.6 to 9.7 pounds.
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